On the one hand, the wide adoption of thermal cameras and heat sensors in public places, such as hospitals, restaurants, and schools can offer early warnings. For example, it is reported in [1]} that thermal cameras have been adopted in airports and other transportation hubs to identify potentially-infected persons. The diverse thermal cameras and heat sensors are essentially connected with blockchain-enabled IoMT, which can guarantee data traceability and protect data privacy. Moreover, the introduction of thermal cameras to unmanned aerial vehicles (UAVs) can provide flexible surveillance on certain regions, which however may not be accessible to medical professionals [2]}. On the other hand, the proliferation of nucleic acid tests and other COVID-19 test systems can help to identify infectious persons in a rapid manner. Thereafter, the interconnected IoMT systems can offer a ubiquitous data accessing services to various medical institutions, consequently identifying the origin of the virus.
